After a single dose of 65 mg (50 mg/square meter of body surface) as used for abortion no trace has been found in mother’s milk. For this reason it is considered to be safe for the infant while nursing under such an instance. Some authors considered it also to be safe when used on a weekly basis for the long-term treatment of Rheumatoid Arthritis and other Auto-immune diseases since few or nil presence in mother’s milk has been shown, although blood level testing in the infant is recommended. It can minimize exposure interrupting breastfeeding 24 hours after taking the drug, removing and discarding the milk. It is not recommended to nurse when used for treatment of cancer. Drug is cleared from the body after 6 elimination half-lives. Resuming breastfeeding after 4 days of breast milk pump and dump is likely safe .